High Performance Rotational Viscometer

High Performance Rotational Viscometer

Apparent viscosity of unfilled asphalt is evaluated by a rotational viscometer which measures the torque generated by a calibrated spindle rotating at a selected speed into a bitumen sample heated at precise temperature in the range between ambient temperature to 260°C.

The measured relative resistance to rotation is converted, by a factor, in viscosity units, cP or mPa·s.

Technical specifications

• Viscosity range: 100-40,000,000 cP
• Rotational speed range: 0.01-200 rpm
• Selectable speeds: 18
• Precision: ± 1% of full scale

Resolution

• Using low viscosity adapter: 0.01 cP
• For viscosity lower than 10.000 cP
• For viscosity equal to or above 10,000 cP: 1cP
• Repeatability: 0.2%

Thermometer features

• Temperature margins: 0 to 100° C; 32 to 212°F
• Resolution: 0.1°C / 0.2°F
• Precision: ±0.1°C
• Type of probe: PT100

Features

• 12-key touchpad keyboard
• Direct readout on a graphic display
• Data displayed:
• Selected speed
• Selected spindle
• Viscosity reading
• Percentage of full scale
• Sample temperature
• Shear rate (with coaxial spindles)
• Shear stress (with coaxial spindles)
• Density (entered by the user)
• Step program status
• Analysis and visual characteristics(flow curves)
• Viscosity reading: dynamic viscosity
• (cP or mPa.s) or kinematic viscosity (cSt)
• Program features:
• Time to torque: target torque pre-setting device
• Time to stop: target time pre-setting device
• 9 working memories
• Customizable options
• Programmable
• Multistep
• Ramp
• AUTO-TEST with visual and audible malfunction alarm
• AUTO-RANGE function
• Temperature reading
• User-enabled viscosity and temperature calibration
• 10 language options